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baiming007ll铜虫 (初入文坛)
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The samples were prepared by heating compacted mixtures of metal powder and red phosphorus powder in alunina crucibles under a flow of high purityargon in a rf-heated furnace.The reactions were exothermic and usually became self-sustaining at about 700。c.The mixtures were fired for 1h at a temperature 100c below their incongruent melting points to complete the reaction;firing temperatures varied from 900c to 1300c.The samples were examined matallographically for completeness of reaction and for temperatures varied from 900c to 1300c.The samples were examined matallographically for completeness of reaction and for temperatures varied from 900c to 1300c.The samples were examined matallographically for completeness of reaction and for added to the powdered sample,which was then mixed,compacted,and refired until an essentially single-phase product was obtained. 本帖关键词:phosphorus completeness furnace firing reaction |
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